题目内容
In order to write a convincing article, you must learn how to _______ a logical argument.
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There is a tight connection between theory and practice that all theories ________ from practice and in return serve practice.
________ research has been done into this difficult and complicated case, so we believe someday we can solve it.
There aretoo many ________ of management in this company, which will decrease efficiency and lead to confused management.
The government has already proposed and introduced a package of plan to ________ negative impact of financial crisis.
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